Important Wristwatches, Watches & Clocks
Geneva, Hotel Des Bergues, Oct 17, 1992
J. P. Van Stryp, Anuers(sic), Flemish, circa 1680. Fine and very rare silver pair-cased astronomical watch with annual calendar and tidal indications. and an early application of the balance spring
C. Double body outer with turned bezels and square hinge. Inner, double body, now with stirrup bow, both cases plain and polished. D. Polished silver champleve chapter-ring with Roman numerals and rubricated inner ring for lunar calendar. Central revolving moon-phase disc with blued-steel pointer indicating the hour of high tide for each day of the lunar month. Outer edge with rubricated revolving date ring and further scale showing the months each with the number of days. Single bluedsteel hand of tulip pattern. M. Gilt-brass full-plate, with pierced griffins' head pillars, fusee with chain, fourwheel train without centre-wheel and balluster turned pinion arbors. Verge escapement with plain three-arm steel balance, three turn balance spring with Tompion regulator, open-work florally pierced cock with large irregular foot. Signed on the backplate. In excellent condition Diam. 56mm.